Boat ladder



FIG. 1 is a side elevational view of the boat ladder showing my new design;

FIG. 2 is the opposite side view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a side elevational view thereof, the broken lines showing the transom of a boat is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for the boat ladder, as shown and described. 